The syntheses of cyclopentene from the given compounds are to be outlined. Concept introduction: Substitution reaction: A reaction in which one of the hydrogen atoms of a hydrocarbon or a functional group is substituted by any other functional group is called a substitution reaction. Elimination reaction: A reaction in which two substituent groups are detached and a double bond is formed is called an elimination reaction. Nucleophilic substitution reaction: A reaction in which one of the hydrogen atoms of a hydrocarbon or a functional group is substituted by any nucleophile is called a nucleophilic substitution reaction. A nucleophile is a molecule or atom with the negative charge or having lone pair on nucleophilic atom. There are two types of nucleophilic substitution reactions: S N 1 is a unimolecular reaction and S N 2 is a bimolecular reaction.

Question

Part 1. Draw monomer units of the following products and draw their reaction mechanism 1) Bakelite like polymer Using: Resorcinol + NaOH + Formalin 2) Polyester fiber Using a) pthalic anhydride + anhydrous sodium acetate + ethylene glycol B)pthalic anhydride + anhydrous sodium acetate + glycerol 3) Temporary cross-linked polymer Using: 4% polyvinyl alcohol+ methyl red + 4% sodium borate

Answer 1

Question

Chapter 7, Problem 31P

Interpretation Introduction

Interpretation:

The syntheses of cyclopentene from the given compounds are to be outlined.

Concept introduction:

Substitution reaction: A reaction in which one of the hydrogen atoms of a hydrocarbon or a functional group is substituted by any other functional group is called a substitution reaction.

Elimination reaction: A reaction in which two substituent groups are detached and a double bond is formed is called an elimination reaction.

Nucleophilic substitution reaction: A reaction in which one of the hydrogen atoms of a hydrocarbon or a functional group is substituted by any nucleophile is called a nucleophilic substitution reaction.

A nucleophile is a molecule or atom with the negative charge or having lone pair on nucleophilic atom.

There are two types of nucleophilic substitution reactions: SN1 is a unimolecular reaction and SN2 is a bimolecular reaction.

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